Submerged Arc Agglomerated Flux
Agglomerated submerged arc welding fluxes are solidified flux granules with embedded deoxidizers. They improve melting processes and reduce porosity.
Physicochemical Mechanism of Action
Submerged arc agglomerated welding fluxes consist of solidified powder granules bound by binders. These granules contain deoxidizers such as silicon or titanium, which become active during the melting process and bind oxygen.
Metallurgical Relevance & Welding Risks
Using submerged arc agglomerated fluxes reduces porosity in the weld pool, resulting in a stronger and finer structure. This improves the mechanical properties of the weld such as strength and toughness. Incorrect use or insufficient dosing can lead to overdosing of deoxidizers, causing fusion problems and lack of stress transfer in the joint.
Workshop Practice & Handling Instructions
Use submerged arc agglomerated fluxes for welding jobs that demand high toughness and low porosity. Dose the flux according to the manufacturer's instructions, typically in a ratio of 1 to 2 % of the molten metal. Make sure the welding equipment is set correctly and the temperature stays within the critical window to ensure optimal fusion of the flux granules.